This isn't really about Christianity, but let me answer anyway.
First, please note that Christopher Hitchens was an extreme and vociferous opponent of both Christianity and Islam. Learning about Christianity from him is like learning about America by reading Soviet Cold War propaganda.
By "reformed and recovered Christian fundamentalist", Hitchens means ...

This answer attempts to give an overview of the processes for gaining a Christian education in the Church. Depending on the denomination, this may be called catechism, confirmation, or discipleship. Throughout Christian groups, all encourage new converts to begin familiarizing themselves with the Bible by reading it and listening to it.
In this answer, we ...

I have not read the passage in question before, but given what I know about Hitchens, he likely means that Dr. Michael Shermer used to be a Christian fundamentalist, but is no longer. A Christian fundamentalist is someone who argues that Christianity ought to only have a small number of doctrines, such as the inerrancy of the Bible and the Virgin-birth of ...

A penitent should not go into any more details than absolutely necessary to reveal the sin. Confessors prefer that penitents get to the point and don't tell elaborate stories or be loquacious. If they need details or more context to assess the gravity of the sin, they will ask you.
For example, if you confess "I killed a man.", it would be necessary to know ...